WO2005112348A3 - System and method for detecting link failures - Google Patents

System and method for detecting link failures Download PDF

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Publication number
WO2005112348A3
WO2005112348A3 PCT/US2005/015980 US2005015980W WO2005112348A3 WO 2005112348 A3 WO2005112348 A3 WO 2005112348A3 US 2005015980 W US2005015980 W US 2005015980W WO 2005112348 A3 WO2005112348 A3 WO 2005112348A3
Authority
WO
WIPO (PCT)
Prior art keywords
failure detection
link
detection engine
continuous stream
links
Prior art date
Application number
PCT/US2005/015980
Other languages
French (fr)
Other versions
WO2005112348A2 (en
Inventor
Norman W Finn
Original Assignee
Cisco Tech Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cisco Tech Inc filed Critical Cisco Tech Inc
Priority to EP05748397.6A priority Critical patent/EP1754071B1/en
Priority to CN2005800128748A priority patent/CN1947024B/en
Publication of WO2005112348A2 publication Critical patent/WO2005112348A2/en
Publication of WO2005112348A3 publication Critical patent/WO2005112348A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0677—Localisation of faults
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/50—Testing arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Small-Scale Networks (AREA)
  • Debugging And Monitoring (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

A system and method monitors links in a computer network and rapidly detects failures of such links. Network entities (106) disposed at opposite ends of a link are provided with failure detection engines (210) that signal their presence to each other. Thereafter, each failure detection engine ensures that its entity transmits a continuous stream to the other entity by sending either data frames (204) or newly defined failure detection packets. If an interruption in this continuous stream is detected, then the failure detection engine (210) con­cludes that the link has failed. In response, the failure detection engine preferably noti­fies other applications or protocols of the failure, and causes the link to be shut-down.
PCT/US2005/015980 2004-05-10 2005-05-09 System and method for detecting link failures WO2005112348A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05748397.6A EP1754071B1 (en) 2004-05-10 2005-05-09 System and method for detecting link failures
CN2005800128748A CN1947024B (en) 2004-05-10 2005-05-09 System and method for detecting link failures

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/842,618 US7983173B2 (en) 2004-05-10 2004-05-10 System and method for detecting link failures
US10/842,618 2004-05-10

Publications (2)

Publication Number Publication Date
WO2005112348A2 WO2005112348A2 (en) 2005-11-24
WO2005112348A3 true WO2005112348A3 (en) 2006-08-03

Family

ID=35239338

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/015980 WO2005112348A2 (en) 2004-05-10 2005-05-09 System and method for detecting link failures

Country Status (4)

Country Link
US (1) US7983173B2 (en)
EP (1) EP1754071B1 (en)
CN (1) CN1947024B (en)
WO (1) WO2005112348A2 (en)

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Also Published As

Publication number Publication date
CN1947024A (en) 2007-04-11
EP1754071A4 (en) 2012-01-25
US20050249123A1 (en) 2005-11-10
US7983173B2 (en) 2011-07-19
EP1754071A2 (en) 2007-02-21
EP1754071B1 (en) 2013-04-24
CN1947024B (en) 2010-11-03
WO2005112348A2 (en) 2005-11-24

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